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