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