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