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