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