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