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