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