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