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