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