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