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