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