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