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