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