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