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)(11,13)(12,14)(15,16)(17,18,22,26)(19,28,21,24)(20,32,34,25)(23,27,37,45)(29,39,36,47)(30,41,31,40)(33,42,48,43)(35,46,38,44)(1,3,5,4)(2,6,8,7)(9,11,12,15)(10,13,14,16)(17,19,22,21)(18,24,26,28)(20,33,34,48)(23,30,37,31)(25,42,32,43)(27,40,45,41)(29,38,36,35)(39,46,47,44)(1,3,5,4)(2,7,8,6)(10,14)(13,16)(17,20,22,34)(18,25,26,32)(19,29,21,36)(23,38,37,35)(24,39,28,47)(27,46,45,44)(30,33,31,48)(40,42,41,43)(1,3,5,4)(2,7,8,6)(17,21)(18,24)(19,22)(20,33)(23,31)(25,43)(26,28)(27,40)(29,35)(30,37)(32,42)(34,48)(36,38)(39,46)(41,45)(44,47)(1,4,5,3)(2,6,8,7)(19,30)(21,31)(23,37)(24,40)(27,45)(28,41)(29,33)(35,38)(36,48)(39,42)(43,47)(44,46)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.