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