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)(17,18,23,25,22,20,21,26)(19,27,31,32,30,24,29,28)(2,6)(3,11)(4,13)(7,15)(8,9)(10,16)(17,19)(18,24)(20,27)(21,29)(22,30)(23,31)(25,28)(26,32) involution — undirected(17,20,22,18)(19,28,30,32)(21,26,23,25)(24,29,27,31)(1,3,5,11)(2,7,9,16)(4,14,13,12)(6,10,8,15)(17,21,22,23)(18,25,20,26)(19,29,30,31)(24,28,27,32)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.