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