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