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