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