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