If by "graphics" you mean the full site design, unfortunately we can't request that early. SE employs its own graphics designers who work on things like that, and they don't let them out of the shed until they know a site is going to be sticking around.
If you'd like to start discussing what the site design might look like though, this is the place to do it! For examples, see these two questions on Christianity.SE or this one on TeX.SE.
I'm not sure how the site design could be used to educate users about privacy concerns, but if you want to put a few educational graphics like that somewhere, feel free to make a meta question with all the graphics you want! This is probably the best way to educate users about privacy concerns. Then we can make it a part of the FAQ, or possibly feature it (so it will show up in the sidebar on the main site), etc.