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