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