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