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