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