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)(19,27)(20,30)(21,26)(22,24)(23,29)(25,31)(28,32)(1,3,4,8)(2,5,6,7)(9,10)(11,14)(12,13)(15,16)(18,24)(19,28)(25,30)(26,29)(3,8)(5,7)(10,13)(11,15)(17,19,21,25,22,28,23,30)(18,20,29,32,24,31,26,27)(2,6)(5,7)(9,11,12,15)(10,14,13,16)(17,20,22,31)(18,25,24,30)(19,29,28,26)(21,32,23,27)(10,13)(14,16)(17,21,22,23)(18,26,24,29)(19,25,28,30)(20,27,31,32)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.