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