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