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