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