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