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