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