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