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