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