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