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