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