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