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