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