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