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