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