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