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