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