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