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