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