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