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