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