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