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