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