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