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