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