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