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