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