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