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