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