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