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