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