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