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