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