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