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)(14,16)(17,18)(19,22)(20,25)(21,26)(23,27)(24,29)(28,30)(31,32)(34,36)(39,43)(40,44)(46,47)(10,13)(14,16)(18,19)(20,27)(21,29)(30,31)(33,34,38,36)(35,39,42,43)(37,44,45,40)(41,47,48,46)(9,10,12,13)(11,14,15,16)(17,19,22,18)(20,23,27,25)(21,26,29,24)(28,30,32,31)(33,35)(34,39)(36,43)(37,41)(38,42)(40,46)(44,47)(45,48)(1,2)(3,5)(4,6)(7,8)(17,20)(18,23)(19,25)(21,28)(22,27)(24,30)(26,31)(29,32)(33,36,38,34)(35,39,42,43)(37,44,45,40)(41,46,48,47)(1,3,4,7)(2,5,6,8)(9,11)(10,14)(12,15)(13,16)(17,21)(18,24)(19,26)(20,28)(22,29)(23,30)(25,31)(27,32)(33,37,38,45)(34,40,36,44)(35,41,42,48)(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.