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