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