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