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