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