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