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