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