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