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