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