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