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