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