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