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