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