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