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