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)(35,38)(36,41)(37,40)(39,43)(42,45)(44,47)(46,48)(2,5)(6,8)(9,10,12,14)(11,13,15,16)(19,26)(22,25)(27,32)(29,31)(34,35)(36,43)(40,42)(44,48)(1,2,4,5)(3,6,7,8)(17,18)(19,22)(20,23)(21,24)(25,26)(27,29)(28,30)(31,32)(33,35,38,34)(36,41,43,39)(37,40,45,42)(44,46,48,47)(9,11,12,15)(10,13,14,16)(17,19,21,26)(18,22,24,25)(20,27,28,32)(23,29,30,31)(33,36)(34,39)(35,41)(37,44)(38,43)(40,46)(42,47)(45,48)(1,3)(2,6)(4,7)(5,8)(17,20,21,28)(18,23,24,30)(19,27,26,32)(22,29,25,31)(33,37,38,45)(34,40,35,42)(36,44,43,48)(39,46,41,47)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.