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