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