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