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