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