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