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