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