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