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