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