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