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