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