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