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