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