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