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