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