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