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