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)(11,13)(12,14)(15,16)(18,23)(24,32)(25,31)(26,28)(1,3,5,4)(2,6,8,7)(9,11,12,15)(10,13,14,16)(17,18,21,23)(19,26,20,28)(22,31,30,25)(24,29,32,27)(10,14)(13,16)(17,19,21,20)(18,24,23,32)(22,29,30,27)(25,28,31,26)(1,3,5,4)(2,7,8,6)(19,27)(20,29)(22,30)(24,26)(25,31)(28,32)(1,4,5,3)(2,6,8,7)(17,20,21,19)(18,24,23,32)(22,27,30,29)(25,28,31,26)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.