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