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