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