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