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