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