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