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