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)(19,20)(21,25)(22,23)(24,27)(26,28)(29,32)(30,31)(33,34,39,36)(35,43,44,40)(37,41,48,45)(38,42,47,46)(1,2)(3,7)(4,11)(5,6)(8,13)(9,14)(10,16)(12,15)(17,19)(18,20)(21,26)(22,27)(23,24)(25,28)(29,30)(31,32)(33,35,39,44)(34,40,36,43)(37,47,48,38)(41,42,45,46)(2,6)(7,14)(8,11)(15,16)(18,22)(19,24)(25,30)(26,32)(33,34,39,36)(35,40,44,43)(37,41,48,45)(38,46,47,42)(1,3)(2,7)(4,12)(5,9)(6,14)(8,16)(10,13)(11,15)(17,20,23,27)(18,24,22,19)(21,29,31,28)(25,26,30,32)(33,36,39,34)(35,43,44,40)(37,41,48,45)(38,46,47,42)(1,4)(2,8)(3,10)(5,13)(6,11)(7,15)(9,12)(14,16)(17,21,23,31)(18,25,22,30)(19,26,24,32)(20,28,27,29)(33,37)(34,41)(35,38)(36,45)(39,48)(40,46)(42,43)(44,47)(1,2)(3,7)(4,8)(5,6)(9,14)(10,15)(11,13)(12,16)(17,22,23,18)(19,27,24,20)(21,30,31,25)(26,29,32,28)(33,38)(34,42)(35,37)(36,46)(39,47)(40,45)(41,43)(44,48)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.