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