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