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