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