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