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