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