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