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