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