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