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