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