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