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