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