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