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