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