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