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