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