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