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