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