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