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)(19,28,32,20)(22,26,29,27)(24,25,30,31)(1,3,5,4)(2,6,8,7)(9,10)(11,14)(12,13)(15,16)(17,19,29,25,23,32,22,31)(18,24,26,20,21,30,27,28)(1,3,5,4)(2,7,8,6)(10,13)(14,16)(17,20,29,30,23,28,22,24)(18,25,26,32,21,31,27,19)(1,4,5,3)(2,6,8,7)(9,11)(10,14)(12,15)(13,16)(17,21,23,18)(19,30,32,24)(20,25,28,31)(22,26,29,27)(11,15)(14,16)(17,22,23,29)(18,26,21,27)(19,31,32,25)(20,30,28,24)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.