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