I love this idea. As soon as I pull out Visio to make a diagram, I tend to get frustrated trying to figure out the design aspects. What arrangement I should use

I love this idea. As soon as I pull out Visio to make a diagram, I tend to get frustrated trying to figure out the design aspects. What arrangement I should use and where to start. If I could just plot out all of the text, and let a program generate a clean graphical representation, that sounds like a gamechanger.