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