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