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