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