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