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