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