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