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