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