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