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