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