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