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