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