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