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