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