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