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