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