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