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)(11,13)(12,14)(15,16)(17,18,21,20)(19,23,24,22)(25,26,29,30)(27,31,32,28)(9,10,12,14)(11,13,15,16)(17,19)(18,22)(20,23)(21,24)(27,32)(28,31)(11,15)(13,16)(17,19,21,24)(18,23,20,22)(25,27)(26,28)(29,32)(30,31)(1,3,5,8)(2,6,4,7)(9,11,12,15)(10,13,14,16)(17,19)(18,23)(20,22)(21,24)(25,28)(26,27)(29,31)(30,32)(1,4,5,2)(3,7,8,6)(9,10)(11,13)(12,14)(15,16)(17,20,21,18)(19,22,24,23)(25,26)(27,28)(29,30)(31,32)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.