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