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