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