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