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