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