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