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