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