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