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