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