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