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