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