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