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