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