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