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