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