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