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