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