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