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