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