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