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)(35,38)(36,41)(37,42)(39,44)(40,46)(43,47)(45,48)(3,7)(6,8)(9,11,14,13)(10,15,12,16)(19,25)(23,28)(26,31)(30,32)(34,35)(39,41)(40,42)(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)(33,35,38,34)(36,41,44,39)(37,40,46,42)(43,47,45,48)(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)(33,36)(34,39)(35,41)(37,45)(38,44)(40,48)(42,47)(43,46)(17,20,21,27)(18,24,22,29)(19,26,25,31)(23,30,28,32)(33,37,38,46)(34,40,35,42)(36,43,44,45)(39,47,41,48)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.