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