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