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