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