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