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