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