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