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