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