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