One vertex per element, one color per generator, with an edge from x to x·s.
(2,5)(3,7)(18,22)(19,23)(20,28)(25,27)(26,31)(30,32) involution — undirected(1,2)(3,6)(4,5)(7,8)(9,10)(11,15)(12,13)(14,16)(17,18,21,22)(19,25,27,23)(20,29,28,24)(26,30,32,31)(2,5)(6,8)(10,13)(14,15)(17,19,21,27)(18,23,22,25)(20,26,28,32)(24,30,29,31)(1,3,4,7)(2,6,5,8)(17,20,21,28)(18,24,22,29)(19,26,27,32)(23,30,25,31)(9,11,12,16)(10,14,13,15)(17,18,21,22)(19,23,27,25)(20,29,28,24)(26,31,32,30)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.