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