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