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