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