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