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