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