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