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