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