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