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)(20,33,36,25)(21,26,39,23)(29,42,48,45)(30,31,38,40)(34,43,47,46)(35,41,44,37)(1,3,4,8)(2,5,6,7)(10,13)(11,15)(17,19,22,32)(18,24,27,28)(20,34,36,47)(21,38,39,30)(23,40,26,31)(25,43,33,46)(29,41,48,37)(35,45,44,42)(10,13)(14,16)(17,20,22,36)(18,25,27,33)(19,29,32,48)(21,35,39,44)(23,41,26,37)(24,42,28,45)(30,46,38,43)(31,47,40,34)(2,6)(5,7)(10,13)(14,16)(17,21)(18,26)(19,30)(20,35)(22,39)(23,27)(24,40)(25,37)(28,31)(29,46)(32,38)(33,41)(34,42)(36,44)(43,48)(45,47) involution — undirected(3,8)(5,7)(9,11,12,15)(10,14,13,16)(19,31)(21,39)(23,26)(24,30)(28,38)(29,47)(32,40)(34,48)(35,44)(37,41)(42,46)(43,45)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.