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