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)(11,15)(12,13)(14,16)(17,18,23,20)(19,27,30,25)(21,22,26,24)(28,29,32,31)(1,3,5,4)(2,6,8,7)(9,10)(11,14)(12,13)(15,16)(17,19)(18,25)(20,27)(21,32)(22,29)(23,30)(24,31)(26,28)(1,3,5,4)(2,7,8,6)(10,13)(14,15)(17,20,22,26,23,18,24,21)(19,28,31,27,30,32,29,25)(1,3,5,4)(2,7,8,6)(9,11,12,16)(10,14,13,15)(17,21,22,20,23,26,24,18)(19,25,31,28,30,27,29,32)(1,4,5,3)(2,7,8,6)(17,22,23,24)(18,21,20,26)(19,29,30,31)(25,32,27,28)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.