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