http://socialjustice.rutgers.edu/getting-involved/lgbtqa-student-clubs-and-organizations/
Educating yourself and making a visual impact (small or large), showing that you are a safe person to talk to, can open up lines of communication and create a safe environment for information seeking.
Don't forget about your online presence! This is particularly helpful to our questioning population. Help users connect to the resources they need. Also, consider creating a "Quick Escape" button on each page, where users can quickly be redirected to Google, the main library website, or another site if they get interrupted by someone.