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