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