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