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