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