One vertex per element, one color per generator, with an edge from x to x·s.
(5,6)(7,8)(9,10,13,15)(11,16,12,14)(17,18,21,25)(19,26,29,32)(20,22,30,24)(23,27,31,28)(1,2)(3,4)(9,11,13,12)(10,14,15,16)(18,22)(20,30)(23,26)(24,25)(27,28)(31,32)(2,4)(17,19,21,29)(18,23,25,31)(20,27,30,28)(22,26,24,32)(6,8)(9,12,13,11)(10,14,15,16)(17,20,21,30)(18,22,25,24)(19,27,29,28)(23,26,31,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.