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)(23,25)(24,29)(30,31)(33,34,38,35)(36,41,44,39)(37,40,45,42)(43,47,48,46)(1,3,5,8)(2,4,6,7)(9,11,13,10)(12,15,16,14)(20,28)(24,29)(26,32)(30,31)(34,35)(37,45)(39,41)(43,48)(1,4,5,7)(2,3,6,8)(17,18)(19,25)(20,24)(21,22)(23,27)(26,31)(28,29)(30,32)(33,35,38,34)(36,41,44,39)(37,40,45,42)(43,46,48,47)(9,12)(10,14)(11,15)(13,16)(17,19,21,27)(18,23,22,25)(20,26,28,32)(24,30,29,31)(33,36)(34,39)(35,41)(37,43)(38,44)(40,46)(42,47)(45,48)(1,3)(2,4)(5,8)(6,7)(17,20,21,28)(18,24,22,29)(19,26,27,32)(23,30,25,31)(33,37,38,45)(34,40,35,42)(36,43,44,48)(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.