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