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)(17,18,21,25,22,26,31,27)(19,23,28,20,24,30,32,29)(1,3)(2,5)(4,8)(6,7)(11,16)(13,15)(19,24)(20,29)(23,30)(28,32) involution — undirected(2,6)(3,8)(9,11,12,16)(10,13,14,15)(17,19)(18,23)(20,25)(21,28)(22,24)(26,30)(27,29)(31,32)(2,6)(3,8)(10,14)(13,15)(17,20,21,30,22,29,31,23)(18,24,25,32,26,19,27,28)(2,6)(5,7)(19,24)(20,29)(23,30)(28,32) 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.