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