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