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