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