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