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