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