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