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