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