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