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