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