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)(19,24)(20,21)(22,30)(23,25)(26,28)(27,32)(29,31)(1,2)(3,6)(4,8)(5,7)(9,11)(10,13)(12,16)(14,15)(17,19,23,27)(18,24,25,32)(20,29,30,26)(21,31,22,28)(11,16)(13,15)(17,20,21,18,23,30,22,25)(19,26,31,32,27,29,28,24)(1,3,5,4)(2,6,7,8)(10,14)(13,15)(19,27)(24,32)(26,29)(28,31)(1,4,5,3)(2,6,7,8)(17,21,23,22)(18,20,25,30)(19,28,27,31)(24,26,32,29)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.