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