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