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