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