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