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