Graduating with honors shows recruiters that you're among the cream of the crop. It tells them that you have both the intelligence and the drive to achieve great things, so it's certainly worth listing on your resume. Your honors designation should be included alongside your degree information on your resume.
You would list your honors designation on your resume after your degree and before your major. If your school uses the Latin terms "cum laude" (with honor), "magna cum laude" (with great honor) and "summa cum laude" (with highest honor), use the appropriate term without capitalization. For example your resume might read "B.S., magna cum laude, Biology, May 2014." If your school uses the English terms "Honors" or "High Honors," list it in the same position but with capitalization. In this case your credentials would read as "B.S. with High Honors, Biology, May 2014."