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