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