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