Can I get anything from the company I work for, for false accusations?

Where I work, someone defaced company property. They are still currently working there, along with myself. It is a trucking company garage where we work on the trucks and repair them. This happened near the area I work, but I didn't see who did it. They have an area where they spray paint parts, and when I was getting tools I heard them in the bay painting the parts (which is allowed.) I didn't think anything of it because there are people always doing that. When I went back out to continue working, they went to where I get my tools from and sprayed a big cabinet we keep supplies in. I'm pretty sure I know who did it, but they already are blaming me because that's the area where I work, even though the truck I was working on was out of eyesight of that specific area. My boss said to my face that he thinks I did it, and I've been telling them everything I know to clear my name from this. I know I didn't do it and I'd bet my job on it. If they want my to take a polygraph test I will, but that's not good enough for them and I believe they are thinking of letting me go for this. It's been causing a lot of anxiety on my part because I have bills I need to pay and wouldn't do something stupid like that to jeopardize my job. If and when they ever find out who did in fact do it, can I get anything put of them for doing this to me?