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