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