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