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