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)(11,14)(12,16)(13,15)(21,33)(26,35)(29,40)(31,44)(37,45)(38,43)(42,47)(46,48)(1,3,5,8)(2,6,4,7)(9,11,13,16)(10,14,15,12)(18,23)(19,27)(25,30)(26,35)(28,39)(29,40)(38,43)(42,47)(9,12)(10,11)(13,14)(15,16)(17,18,22,23)(19,24,27,34)(20,30,32,25)(21,26,33,35)(28,41,39,36)(29,37,40,45)(31,43,44,38)(42,48,47,46)(9,10)(11,14)(12,16)(13,15)(17,19)(18,24)(20,28)(21,29)(22,27)(23,34)(25,36)(26,37)(30,41)(31,42)(32,39)(33,40)(35,45)(38,46)(43,48)(44,47) involution — undirected(1,2,5,4)(3,6,8,7)(17,20,22,32)(18,25,23,30)(19,28,27,39)(21,31,33,44)(24,36,34,41)(26,38,35,43)(29,42,40,47)(37,46,45,48)(1,4,5,2)(3,7,8,6)(17,21)(18,26)(19,29)(20,31)(22,33)(23,35)(24,37)(25,38)(27,40)(28,42)(30,43)(32,44)(34,45)(36,46)(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.