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