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