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