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