Creating a 3d stack of squares

I’m trying to make a stack of squares that looks three-dimensional like a stack of pancakes (two-dimensional planes). I want to model interactions between the stacked squares. I can’t quite figure out how to skew or rotate the square to look like it’s laying flat in three dimensions. Can this be done in OmniGraffle 7 on mac?

Kind of like this question, but I want to use Graffle shapes, not external images.

Thanks in advance.

I’d try the cube shape as your best bet for drawing this with the shape tool.