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