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