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