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