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