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