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