Best of luck to you in your assignment.
I am curious, though, as to why you want "people to understand our views better."
I have always felt that if the populace is ignorant in regards to what Satanism really is and are too lazy to correct their own misconceptions, they don't really deserve to know the truth. Informing them of what Satanism really is and correcting their misconceptions for them is in a way, an unreturned favor.
At least, I've felt this way when dealing with people.
A person is a different matter, particularly one who is genuinely interested in the subject and willing to do some research on their own.
Also, have you considered the option of using a speech by someone who perhaps never identified themselves as a Satanist, but had views that were very Satanic in nature? You can get across the ideas of Satanism without necessarily having to say "this was written by a Satanist".
You may get some more specific and helpful advice if you were to also mention what sort of class this is, and what the objective of the asignment is.
Finally, have you considered how this may effect your grade? Who is grading you? Is it solely your instructor, or does the class participate in evaluating you? Do you think that bringing up Satanism could possibly hurt your grade? Certainly there is a feeling of pride in the Satanist for his or her beleifs, but if your pride drives you to present an assignment that, despite its intentions to inform, hurts you in the class rather then helps you, well, that's counter productive pride. Your grade will have suffered, making you a martyr which is something Satanism neither requests or requires (and in fact, views as being more or less stupid.)
The Satanic choice to make is the one that is best and most helpful for you.
At any rate, perhaps when you are finished with this assignment you can follow up with us and let us know what speech you chose, why, and how it was received. There are countless people who come here for help on assignments who wish to report upon Satanism, the CoS, or Anton LaVey, but it's rare that we actually get to hear what they ended up doing and how it was received.
"Extraordinary claims require extraordinary evidence."