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