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