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