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)(33,34,39,42)(35,38,37,41)(36,45,47,40)(43,46,44,48)(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)(33,35,39,37)(34,38,42,41)(36,44,47,43)(40,46,45,48)(2,6)(3,9)(8,11)(10,12)(18,22)(20,26)(25,30)(28,29)(33,36,39,47)(34,40,42,45)(35,43,37,44)(38,48,41,46)(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)(34,40)(35,44)(37,43)(38,46)(39,47)(41,48)(42,45)(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)(33,37,39,35)(34,41,42,38)(36,44,47,43)(40,46,45,48)(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)(33,38,39,41)(34,35,42,37)(36,46,47,48)(40,44,45,43)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.