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