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