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