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