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