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