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