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