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