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