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