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