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