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