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