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