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