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