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