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