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