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