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