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