One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(9,10,13,12)(11,15,16,14)(17,18)(19,23)(20,28)(21,25)(22,26)(24,29)(27,32)(30,31)(5,6)(7,8)(9,11,13,16)(10,14,12,15)(17,19,22,21)(18,23,26,25)(20,27,30,29)(24,28,32,31)(2,4)(6,8)(17,20,22,30)(18,24,26,32)(19,27,21,29)(23,28,25,31)(9,12,13,10)(11,14,16,15)(18,25)(19,21)(23,26)(24,31)(27,29)(28,32)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.