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