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