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