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