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