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