For those fresh out of college, coming up with viable sales experience can be a challenge. But when you realize that many employers look for other traits as often as they do for actual sales experience, your "resume building quest" can become much easier. For example, demonstrate how you are self-motivated and self-driven. Employers want sales professionals who don't need to be told what to do every second of the day. They want people with initiative who are willing to make mistakes over doing nothing.
Let employers know that you are "goal oriented" and focused on achieving your goals. Sales is a lot like sports, where by a goal is set and nothing is allowed to prevent you from reaching that goal. What goals have YOU set and worked tirelessly to accomplish?