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