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