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