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