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