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