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