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