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