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