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