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)(20,34,36,41)(21,26)(22,27)(23,28)(24,31)(25,35,42,37)(30,38,45,48)(32,40)(33,39)(43,44,47,46)(2,6)(7,15)(8,13)(9,16)(17,19,21,31,23,33,22,32)(18,24,27,29,28,40,26,39)(20,30,35,44,36,45,37,46)(25,38,41,43,42,48,34,47)(1,3,4,10)(2,7,6,15)(5,14,12,11)(8,16,13,9)(17,20)(18,25)(19,30)(21,35)(22,37)(23,36)(24,38)(26,34)(27,41)(28,42)(29,43)(31,44)(32,46)(33,45)(39,47)(40,48)(17,21,23,22)(18,26,28,27)(19,31,33,32)(20,35,36,37)(24,39,40,29)(25,34,42,41)(30,44,45,46)(38,47,48,43)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.