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