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