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