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