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