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