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