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