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