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