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