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