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