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