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