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