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