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