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