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