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