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