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