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