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