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