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