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