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