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