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