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