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