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