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