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