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