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