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