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