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