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