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