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