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