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