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