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