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