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