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