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