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