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