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