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