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