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