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