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