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