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