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