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