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