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