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