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