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