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