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)(17,18,22,20)(19,23,27,25)(21,28,29,24)(26,31,32,30)(33,34)(35,36)(37,40)(38,46)(39,42)(41,47)(43,48)(44,45)(1,3,7,4)(2,8,6,9)(5,11,13,12)(10,15,14,16)(17,19,22,27)(18,23,20,25)(21,26,29,32)(24,30,28,31)(33,35,39,37)(34,36,42,40)(38,43,47,45)(41,44,46,48)(18,20)(23,25)(24,28)(30,31)(33,36,39,40)(34,37,42,35)(38,44,47,48)(41,45,46,43)(1,4,7,3)(2,9,6,8)(5,11,13,12)(10,15,14,16)(17,20,22,18)(19,25,27,23)(21,28,29,24)(26,31,32,30)(33,37,39,35)(34,40,42,36)(38,45,47,43)(41,48,46,44)(1,5,7,13)(2,10,6,14)(3,11,4,12)(8,15,9,16)(17,19)(18,23)(20,25)(21,26)(22,27)(24,30)(28,31)(29,32)(33,34)(35,40)(36,37)(38,46)(39,42)(41,47)(43,44)(45,48)(1,6,7,2)(3,9,4,8)(5,10,13,14)(11,15,12,16)(17,21,22,29)(18,24,20,28)(19,26,27,32)(23,30,25,31)(33,38)(34,41)(35,43)(36,44)(37,45)(39,47)(40,48)(42,46)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.