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