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