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)(19,27)(20,31)(21,23)(22,35)(24,30)(25,32)(26,34)(28,40)(29,43)(33,39)(36,37)(38,48)(41,42)(44,45)(46,47)(1,3,4,8)(2,5,6,7)(9,10)(11,14)(12,13)(15,16)(18,23)(19,28)(20,32)(26,35)(30,36)(33,47)(38,45)(41,43)(3,8)(5,7)(10,13)(11,15)(17,19)(18,24)(20,29)(21,28)(22,36)(23,37)(25,38)(26,40)(27,35)(30,34)(31,45)(32,42)(33,48)(39,43)(41,46)(44,47) involution — undirected(2,6)(5,7)(9,11,12,15)(10,14,13,16)(17,20,21,32)(18,25,23,31)(19,29,28,42)(22,33,34,47)(24,38,37,45)(26,39,35,46)(27,41,40,43)(30,44,36,48)(10,13)(14,16)(19,28)(20,32)(24,37)(25,31)(27,40)(30,36)(33,47)(39,46) 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.