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