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