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