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)(19,29)(20,34)(21,26)(22,28)(23,27)(24,32)(25,36)(30,38)(31,39)(33,42)(35,40)(37,41)(43,45)(44,47)(46,48) involution — undirected(1,3)(2,7)(4,12)(5,14)(6,13)(8,11)(9,15)(10,16)(17,19,23,33)(18,24,27,39)(20,30,37,46)(21,31,22,32)(25,38,40,48)(26,29,28,42)(34,47,41,43)(35,44,36,45)(4,5)(8,10)(11,16)(12,14)(17,20)(18,25)(19,30)(21,36)(22,35)(23,37)(24,38)(26,41)(27,40)(28,34)(29,43)(31,45)(32,44)(33,46)(39,48)(42,47) involution — undirected(1,4,6,5)(2,8,9,10)(3,12,13,14)(7,11,15,16)(17,21,23,22)(18,26,27,28)(19,31,33,32)(20,35,37,36)(24,29,39,42)(25,34,40,41)(30,44,46,45)(38,47,48,43)(2,9)(7,15)(8,10)(11,16)(18,27)(24,39)(25,40)(26,28)(29,42)(34,41)(38,48)(43,47) 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.