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