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