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