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