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