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