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