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