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