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