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