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