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