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