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