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