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