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