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