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