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