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)(17,18,21,24,22,25,20,26)(19,27,30,23,28,31,29,32)(1,2,7,14,5,9,4,6)(3,8,10,15,12,16,11,13)(17,19)(18,23)(20,30)(21,29)(22,28)(24,27)(25,32)(26,31)(1,3)(2,8)(4,11)(5,12)(6,13)(7,10)(9,16)(14,15)(18,24)(20,21)(23,27)(25,26)(29,30)(31,32) involution — undirected(18,25)(19,28)(24,26)(29,30) 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.