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)(19,26)(20,22)(21,30)(23,28)(24,31)(25,29)(27,32)(2,4)(9,11,13,10)(12,15,16,14)(18,22)(19,27)(25,30)(28,31)(1,2,3,4)(9,12,13,16)(10,14,11,15)(17,19,21,28,20,27,29,31)(18,23,25,26,22,24,30,32)(10,11)(14,15)(17,19,21,28,20,27,29,31)(18,24,25,32,22,23,30,26)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.