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