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