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