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