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