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