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