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