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