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