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