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