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