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)(19,23,28,29)(21,24,31,30)(25,27,32,26)(2,5)(3,7)(9,11,13,12)(10,14,15,16)(17,19)(18,23)(20,29)(21,26)(22,28)(24,25)(27,31)(30,32)(9,12,13,11)(10,14,15,16)(17,18,22,20)(19,25,28,32)(21,30,31,24)(23,27,29,26)(2,5)(6,8)(17,20,22,18)(19,23,28,29)(21,30,31,24)(25,27,32,26)(1,3,4,7)(2,6,5,8)(19,26)(21,31)(23,25)(24,30)(27,28)(29,32)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.