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