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