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