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