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