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