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)(21,29,32,24)(26,31,30,28)(6,8)(11,15)(14,16)(17,19,22,27)(18,23,25,20)(21,30,32,26)(24,28,29,31)(5,6,7,8)(9,10)(11,14)(12,13)(15,16)(17,20)(18,19)(21,31)(22,23)(24,30)(25,27)(26,29)(28,32)(1,2,3,4)(9,10)(11,14)(12,13)(15,16)(17,19)(18,20)(21,30)(22,27)(23,25)(24,31)(26,32)(28,29)(9,11)(10,14)(12,15)(13,16)(17,21)(18,24)(19,26)(20,28)(22,32)(23,31)(25,29)(27,30) 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.