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