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