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