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