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