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