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