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