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