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