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