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