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