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