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