Hey David,
While Arljit was on the right track as far as detailed content print, the ability to actually output the entire Data Foundation as an image is in a slightly different spot. Open the Data Foundation and observe the button highlighted here.
It'll download the diagram as an image to a location of your choosing. The rub there is if you want to print it and if it is a universe of any size, you need a plotter. So, as Arljit pointed out, paper size in the ANSI A-whatever size is what will get you to plotter sized prints.
I hope that helps.
EV