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