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