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