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