One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,5)(4,6)(7,8)(9,10)(11,13)(12,14)(15,16)(17,18,23,37,22,27,21,26)(19,28,30,24,32,39,31,40)(20,33,34,42,35,25,36,41)(29,44,47,48,46,43,45,38)(1,3,4,7)(2,5,6,8)(9,11)(10,13)(12,15)(14,16)(17,19)(18,24)(20,29)(21,30)(22,32)(23,31)(25,38)(26,39)(27,40)(28,37)(33,48)(34,45)(35,46)(36,47)(41,43)(42,44)(2,6)(5,8)(10,14)(11,15)(17,20,22,35)(18,25,27,33)(19,29,32,46)(21,36,23,34)(24,38,40,48)(26,42,37,41)(28,43,39,44)(30,47,31,45)(9,11)(10,13)(12,15)(14,16)(17,21,22,23)(18,26,27,37)(19,30,32,31)(20,34,35,36)(24,39,40,28)(25,41,33,42)(29,45,46,47)(38,43,48,44)(11,15)(13,16)(20,35)(25,33)(29,46)(34,36)(38,48)(41,42)(43,44)(45,47) 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.