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