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