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