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