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