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