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