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