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