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