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