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