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