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