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