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