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