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