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