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