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