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