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