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